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6.0 SUMMARY <br /> No significant hydrologic impacts, attributable to activities at the SIIW, were noted <br /> during 2020. Groundwater levels in all monitoring wells were within the historic range <br /> observed at these locations. No exceedances of the groundwater quality standards <br /> were observed at the GWPOC. Exceedances of the total recoverable iron chronic <br /> aquatic life standards occurred at three of the downstream stream monitoring points. <br /> However, there were no exceedances of NPDES permit limits or water quality <br /> standards at the outfalls indicating the iron was unrelated to runoff from the SIIW. <br /> Page 17 of 17 <br />